usb: musb: tusb6010_omap: Allocate DMA channels upfront

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Instead of requesting the DMA channel in tusb_omap_dma_allocate() do it
when the controller is created and in runtime work from the DMA channel
pool.

This change is needed for the DMAengine conversion of the driver since the
tusb_omap_dma_allocate() is called in interrupt context which might lead
to lock within the DMAengine API when requesting channel.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Peter Ujfalusi 2017-06-16 10:41:00 -05:00 • committed by Greg Kroah-Hartman

parent 1df9d9ec34

commit 4cadc711cd

1 changed files with 92 additions and 93 deletions

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drivers/usb/musb/tusb6010_omap.c

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